<template>
    <div id="aCoursesList" class="bg-fa of">
        <!-- /课程详情 开始 -->
        <section class="container">
            <section class="path-wrap txtOf hLh30">
                <a href="#" title class="c-999 fsize14">首页</a>
                \
                <a href="#" title class="c-999 fsize14">{{ courseWebVo.subjectLevelOne }}</a>
                \
                <span class="c-333 fsize14">{{ courseWebVo.subjectLevelTwo }}</span>
            </section>
            <div>
                <article class="c-v-pic-wrap" style="height: 357px;">
                    <section class="p-h-video-box" id="videoPlay">
                        <img :src="courseWebVo.cover" :alt="courseWebVo.title" class="dis c-v-pic">
                    </section>
                </article>
                <aside class="c-attr-wrap">
                    <section class="ml20 mr15">
                        <h2 class="hLh30 txtOf mt15">
                            <span class="c-fff fsize24">{{ courseWebVo.title }}</span>
                        </h2>
                        <section class="c-attr-jg">
                            <span class="c-fff">价格：</span>
                            <b class="c-yellow" style="font-size:24px;">￥{{ courseWebVo.price }}</b>
                        </section>
                        <section class="c-attr-mt c-attr-undis">
                            <span class="c-fff fsize14">主讲： {{ courseWebVo.teacherName }}&nbsp;&nbsp;&nbsp;</span>
                        </section>
                        <section class="c-attr-mt of">
                            <span class="ml10 vam">
                                <em class="icon18 scIcon"></em>
                                <a class="c-fff vam" title="收藏" href="#">收藏</a>
                            </span>
                        </section>
                        <section v-if="isBuy || Number(courseWebVo.price) === 0" class=" c-attr-mt">
                            <a href="#" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
                        </section>
                        <section v-else class=" c-attr-mt">
                            <a @click=" createOrders()" href="#" title="立即购买" class="comm-btn c-btn-3">立即购买</a>
                        </section>
                    </section>
                </aside>
                <aside class="thr-attr-box">
                    <ol class="thr-attr-ol">
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">购买数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">{{ courseWebVo.buyCount }}</h6>
                            </aside>
                        </li>
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">课时数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">{{ courseWebVo.lessonNum }}</h6>
                            </aside>
                        </li>
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">浏览数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">{{ courseWebVo.viewCount }}</h6>
                            </aside>
                        </li>
                    </ol>
                </aside>
                <div class="clear"></div>
            </div>
            <!-- /课程封面介绍 -->
            <div class="mt20 c-infor-box">
                <article class="fl col-7">
                    <section class="mr30">
                        <div class="i-box">
                            <div>
                                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tabtitle">
                                    <a name="c-i" class="current" title="课程详情">课程详情</a>
                                </section>
                            </div>
                            <article class="ml10 mr10 pt20">
                                <div>
                                    <h6 class="c-i-content c-infor-title">
                                        <span>课程介绍</span>
                                    </h6>
                                    <div class="course-txt-body-wrap">
                                        <section class="course-txt-body">
                                            <p v-html="courseWebVo.description"></p>
                                        </section>
                                    </div>
                                </div>
                                <!-- /课程介绍 -->
                                <div class="mt50">
                                    <h6 class="c-g-content c-infor-title">
                                        <span>课程大纲</span>
                                    </h6>
                                    <section class="mt20">
                                        <div class="lh-menu-wrap">
                                            <menu id="lh-menu" class="lh-menu mt10 mr10">
                                                <ul>
                                                    <!-- 文件目录 -->
                                                    <li class="lh-menu-stair"
                                                        v-for="  chapter   in   chapterVideoList  " :key="chapter.id">
                                                        <a href="javascript: void(0)" :title="chapter.title"
                                                            class="current-1">
                                                            <em class="lh-menu-i-1 icon18 mr10"></em>{{ chapter.title }}
                                                        </a>

                                                        <ol class="lh-menu-ol" style="display: block;">
                                                            <li class="lh-menu-second ml30"
                                                                v-for="  video   in   chapter.children  "
                                                                :key="video.id">
                                                                <a :href="'/player/' + video.videoSourceId"
                                                                    target="_blank">
                                                                    <span class="fr">
                                                                        <i class="free-icon vam mr10">免费试看</i>
                                                                    </span>
                                                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{
                    video.title }}
                                                                </a>
                                                            </li>
                                                        </ol>

                                                    </li>
                                                </ul>
                                            </menu>
                                        </div>
                                    </section>
                                </div>
                                <!-- /课程大纲 -->
                            </article>
                        </div>
                    </section>
                </article>
                <aside class="fl col-3">
                    <div class="i-box">
                        <div>
                            <section class="c-infor-tabTitle c-tab-title">
                                <a title href="javascript:void(0)">主讲讲师</a>
                            </section>
                            <section class="stud-act-list">
                                <ul style="height: auto;">
                                    <li>
                                        <div class="u-face">
                                            <a href="#">
                                                <img :src="courseWebVo.avatar" width="50" height="50" alt>
                                            </a>
                                        </div>
                                        <section class="hLh30 txtOf">
                                            <a class="c-333 fsize16 fl" href="#">{{ courseWebVo.teacherName }}</a>
                                        </section>
                                        <section class="hLh20 txtOf">
                                            <span class="c-999">{{ courseWebVo.intro }}</span>
                                        </section>
                                    </li>
                                </ul>
                            </section>
                        </div>
                    </div>
                </aside>
                <div class="clear"></div>
                <div class="mt50 commentHtml">
                    <div>
                        <h6 class="c-c-content c-infor-title" id="i-art-comment">
                            <span class="commentTitle">课程评论</span>
                        </h6>
                        <section class="lh-bj-list pr mt20 replyhtml">
                            <ul>
                                <li class="unBr">
                                    <aside class="noter-pic">
                                        <img width="50" height="50" class="picImg" src="~/assets/img/avatar-boy.gif">
                                    </aside>
                                    <div class="of">
                                        <section class="n-reply-wrap">
                                            <fieldset>
                                                <textarea name="" v-model="comment.content" placeholder="输入您要评论的文字"
                                                    id="commentContent"></textarea>
                                            </fieldset>
                                            <p class="of mt5 tar pl10 pr10">
                                                <span class="fl "><tt class="c-red commentContentmeg"
                                                        style="display: none;"></tt></span>
                                                <input type="button" @click="addCourseComment()" value="回复"
                                                    class="lh-reply-btn">
                                            </p>
                                        </section>
                                    </div>
                                </li>
                            </ul>
                        </section>
                        <section class="">
                            <section class="question-list lh-bj-list pr">
                                <ul class="pr10">
                                    <li v-for="(  comment, index  ) in   data.items  " v-bind:key="index">
                                        <aside class="noter-pic">
                                            <img width="50" height="50" class="picImg" :src="comment.avatar">
                                        </aside>
                                        <div class="of">
                                            <span class="fl">
                                                <font class="fsize12 c-blue"> {{ comment.nickname }}</font>
                                                <font class="fsize12 c-999 ml5">评论：</font>
                                            </span>
                                        </div>
                                        <div class="noter-txt mt5">
                                            <p>{{ comment.content }}</p>
                                        </div>
                                        <div class="of mt5">
                                            <span class="fr">
                                                <font class="fsize12 c-999 ml5">{{ comment.gmtCreate }}</font>
                                            </span>
                                        </div>
                                    </li>
                                </ul>
                            </section>
                        </section>

                        <!-- 公共分页 开始 -->
                        <div class="paging">
                            <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
                            <a :class="{ undisable: !data.hasPrevious }" href="#" title="首页"
                                @click.prevent="gotoPage(1)">首</a>
                            <a :class="{ undisable: !data.hasPrevious }" href="#" title="前一页"
                                @click.prevent="gotoPage(data.current - 1)">&lt;</a>
                            <a v-for="  page   in   data.pages  " :key="page"
                                :class="{ current: data.current == page, undisable: data.current == page }"
                                :title="'第' + page + '页'" href="#" @click.prevent="gotoPage(page)">{{ page }}</a>
                            <a :class="{ undisable: !data.hasNext }" href="#" title="后一页"
                                @click.prevent="gotoPage(data.current + 1)">&gt;</a>
                            <a :class="{ undisable: !data.hasNext }" href="#" title="末页"
                                @click.prevent="gotoPage(data.pages)">末</a>
                            <div class="clear" />
                        </div>
                        <!-- 公共分页 结束 -->
                    </div>
                </div>
            </div>
        </section>
        <!-- /课程详情 结束 -->
    </div>
</template>
<script>
import courseApi from '@/api/course'
import commentApi from '@/api/commonedu'
import ordersApi from '@/api/orders'

export default {
    asyncData({ params, error }) {
        return { courseId: params.id }
    },

    data() {
        return {
            data: {},
            page: 1,
            limit: 4,
            total: 10,
            comment: {
                content: '',
                courseId: ''
            },
            courseInfo: {},
            chapterVideoList: [],
            courseWebVo: [],
            isBuy: false
        }
    },
    created() {
        if (this.$route.params && this.$route.params.id) {
            this.courseId = this.$route.params.id
        }
        this.initCourseInfo()
        this.initComment()
    },
    methods: {
        //查询课程的详细信息
        initCourseInfo() {
            courseApi.getCourseInfo(this.courseId)
                .then(response => {
                    this.courseWebVo = response.data.data.courseWebVo
                    this.chapterVideoList = response.data.data.chapterVideoList
                    this.isBuy = response.data.data.isBuy
                })
        },
        //生成订单
        createOrders() {
            ordersApi.createOrders(this.courseId)
                .then(response => {
                    //获取订单号
                    //生成订单之后，跳转到订单展示页面
                    this.$router.push({ path: '/orders/' + response.data.data.orderId })
                })
        },
        initComment() {
            commentApi.getPageList(this.page, this.limit, this.courseId)
                .then(response => {
                    this.data = response.data.data
                })
        },
        addCourseComment() {
            this.comment.courseId = this.courseId
            this.comment.teacherId = this.courseInfo.teacherId
            commentApi.addCommentList(this.comment).then(response => {
                if (response.data.data.success) {
                    this.comment.content = ''
                    this.initComment()
                }
            })
        },
        gotoPage(page) {
            commentApi.getPageList(page, this.limit, this.courseId).then(response => {
                this.data = response.data.data
            })
        }
    }
};
</script>